Depo EC next morning

I got depo the 22nd for the first time(I was on my period for the 2nd day when I got it) and I just got off my period Tuesday and had sex yesterday but I did research after the fact like a moron and it said u have to wait a week till ur protected and it had only been 6 days. So it says I was not protected. So I went to the store this morning and bought the morning pill for 35 dollars at Walmart. Do y’all think I could be pregnant, it says there only like an 85% affective on those pills 😥